I am sorry if your so called real Ninjutsu schools don't teach you how to make even these simple relight torches let alone the real history behind them. I bet they show you how to dress up and dance and call other authentic Ninjutsu practitioner a bunch of bad names?
For your own peace...You really should stop watching my videos because you will eventually feel cheated from those who teach you now and call me names and pretend to be Ninja. OK?